On Wed, Apr 01, 2026 at 11:08:15AM +0200, Peter Zijlstra wrote: > On Tue, Mar 31, 2026 at 12:52:10PM -0700, Kees Cook wrote: > > > I think for this series, __ob_trap/__ob_wrap is what should be used. > > > > And for other folks, the background here is that we originally wanted > > to use macros for "__trap" and "__wrap", but the powerpc C compiler > > (both Clang and GCC) have a builtin macro named "__trap" already. So > > I switched to just using the Clang-native type qualifier. We can use > > the attribute style too, but there was a lot of confusion during the > > Clang development phases where people kept forgetting this was a type > > qualifier, not an attribute (i.e. the attribute is an internal alias > > for the qualifier, and the qualifier is a new type). > > Since you mention qualifiers... > > What is the result of __typeof_unqual__(int __ob_trap) ?
Hmm, it seems like "const" doesn't get peeled off. That can be fixed, if that's needed? 'typeof_unqual(int)' (aka 'int') 'typeof_unqual(__ob_trap int)' (aka '__ob_trap int') 'typeof_unqual(const int)' (aka 'int') 'typeof_unqual(__ob_trap const int)' (aka '__ob_trap const int') -Kees -- Kees Cook
